INTER-UNIVERSITY CENTRE FOR ASTRONOMY AND ASTROPHYSICS
(An Autonomous Institution of the University Grants Commission)
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SEMINAR
|
PROFESSOR JEAN SURDEJ |
| University of Liege, Belgium |
| The optical gravitational lens experiment and discovery of multiply imaged quasars with Gaia |
|
After recalling the basic principles underlying the formation of atmospheric and gravitationally lensed mirages, we describe a simple optical lens experiment which accounts for all types of image configurations observed among presently known gravitational lens systems. We shall also report on a recent systematic search for multiply imaged quasars based upon observations carried out with Gaia. |
| IUCAA Lecture Hall, Bhaskara 3 |
| November 20, 2019, 16:00 hrs. |